<template>
  <div class="app-container">
    <!--表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-select v-model="searchObj.type" clearable placeholder="请选择">
          <el-option label="学员登录数统计" value="login_num" />
          <el-option label="学员注册数统计" value="register_num" />
          <el-option label="课程播放数统计" value="video_view_num" />
          <el-option label="每日课程数统计" value="course_num" />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="searchObj.begin"
          type="date"
          placeholder="选择开始日期"
          value-format="yyyy-MM-dd"
        />
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="searchObj.end"
          type="date"
          placeholder="选择截止日期"
          value-format="yyyy-MM-dd"
        />
      </el-form-item>
      <el-button
        :disabled="btnDisabled"
        type="primary"
        icon="el-icon-search"
        @click="showChart()"
      >查询</el-button
      >
    </el-form>
    <div class="chart-container">
      <div id="chart" class="chart" style="height: 500px; width: 100%" />
    </div>
  </div>
</template>


<script>
  import statisticsApi from '../../api/statistics/statistics'
  import echarts from 'echarts'
  export default {
    data(){
      return{
        searchObj:{

        },
        btnDisabled:false,
        xData:[],
        yData:[]

      }
    },
    created() {

    },
    methods:{
      showChart(){
        statisticsApi.showData(this.searchObj)
        .then(resp=>{
          this.xData = resp.data.date_calculatedList;
          this.yData = resp.data.numDataList;
          this.setChart();
        })
      },
      setChart() {
        // 基于准备好的dom，初始化echarts实例
        this.chart = echarts.init(document.getElementById("chart"));
        // console.log(this.chart)
        // 指定图表的配置项和数据
        var option = {
          title:{
            text:'数据统计'
          },
          tooltip:{
            trigger:'axis'
          },
          // x轴是类目轴（离散数据）,必须通过data设置类目数据
          xAxis: {
            type: "category",
            data: this.xData,
          },
          dataZoom: [
            {
              show: true,
              height: 30,
              xAxisIndex: [0],
              bottom: 30,
              start: 10,
              end: 80,
              handleIcon:
                "path://M306.1,413c0,2.2-1.8,4-4,4h-59.8c-2.2,0-4-1.8-4-4V200.8c0-2.2, 1.8-4, 4-4h59.8c2.2, 0, 4, 1.8, 4, 4V413z",
              handleSize: "110%",
              handleStyle: {
                color: "#d3dee5",
              },
              textStyle: {
                color: "#fff",
              },
              borderColor: "#90979c",
            },
            {
              type: "inside",
              show: true,
              height: 15,
              start: 1,
              end: 35,
            },
          ],

          // y轴是数据轴（连续数据）
          yAxis: {
            type: "value",
          },
          // 系列列表。每个系列通过 type 决定自己的图表类型
          series: [
            {
              // 系列中的数据内容数组
              data: this.yData,
              // 折线图
              type: "line",
            },
          ],
        };
        this.chart.setOption(option);
      },


    }

  }
</script>

<style scoped>

</style>
